Chemistry review for AP Bio

Multiple Choice

The smallest particle of a substance is......

• atom

• element

• molecule

• compound

Multiple Choice

What is the term for combining 2 or more atoms together?

• atoms
• elements
• molecules
• compounds

Multiple Choice

What part of an atom is NEGATIVELY charged?

• protons
• neutrons
• electrons
• atoms

Multiple Choice

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Multiple Choice

If the number of protons equal the number of _____, the atom will have no charge

• protons
• neutrons
• electrons
• nucleus

Multiple Choice

What type of charge does a neutron have?

• negative

• positive

• no charge/neutral

Watch this video to review the different types of chemical bonds.

You can click on the title in top left of the video to open it larger in another tab.

Multiple Choice

Bond where electrons are shared

• Ionic Bonds

• Covalent Bonds

• Both bonds

• Neither bond

Multiple Choice

How are covalent bonds formed?

• Sharing of electrons
• Transfer of electrons

Multiple Choice

Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Multiple Choice

How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

Multiple Choice

The most common atoms in biology are carbon, hydrogen, oxygen and nitrogen.

These atoms are....

• metals

• non-metals

Multiple Choice

What kind of atoms are in this molecule of water?

• metals only

• non-metals only

• both metals and non-metals

Multiple Choice

What kind of intramolecular bonds are in this molecule of water?

(intramolecular bonds are the bonds that hold together atoms within a single molecule)

• ionic bonds only

• covalent bonds only

• both ionic and covalent bonds

Multiple Choice

What kind of intramolecular bonds are in this molecule of glucose?

• ionic bonds only

• covalent bonds only

• both ionic and covalent bonds

Multiple Choice

What kind of intramolecular bonds are in this molecule of sodium chloride (NaCl)?

• ionic bonds only

• covalent bonds only

• both ionic and covalent bonds

Watch this video to review polarity.

You can click on the title in top left of the video to open it larger in another tab.

Fill in the Blanks

A covalent bond between two atoms with different electronegativity is...

Multiple Choice

The attraction that an atom has for shared electrons in bonds is

• electron affinity.

• electronegativity.

• electropositivity.

• electromagnetism.

Multiple Choice

In a polar covalent bond, electrons are shared:

• equally

• unequally

• between two metals

• between a metal and a non-metal

Multiple Choice

Polar molecules have...

• no charges.

• partial positive and negative charges on opposite ends of the molecules.

• only partial positive charges.

• either partial positive or negative charges, but not both.

Multiple Choice

Electronegativity is a measurement of the ability of an atom to:

• attract electrons

• repel electrons

• attract protons

• attract other atoms

Multiple Choice

In order to determine if a molecule is polar, you must consider the

• polarity of bonds and symmetry of the molecule.

• number of electrons and number of bonds.

• polarity of bonds only.

• total charge of each ion and number of multiple bonds.

Multiple Choice

Is this molecule of NH₃ polar or nonpolar?

• polar

• nonpolar

Multiple Choice

Is this molecule of CH₄ polar or nonpolar?

• polar

• nonpolar

Multiple Choice

Is the long hydrophobic chain (highlighted in purple in the picture) of a fatty acid polar or nonpolar?

• polar

• nonpolar

Nice work!!

You made it through the chem review lesson, good job!!

If you feel like you need more practice here is a youtube playlists of helpful videos to review essentials from chemistry:

https://bit.ly/chem-review